Manufacturer: Göttfert Werkstoff-Prüfmaschinen GmbH
Short description: High-pressure capillary rheometer with a test force of 75 kN and high-precision pressure measurement. Various capillary types are available, which make it possible to realize variable shear rates. This allows different manufacturing processes to be simulated and also increases the range of materials that can be tested. In addition to the established viscosity measurement, the Rheograph 75 also has add-ons for measuring thermal conductivity and carrying out PVT measurements.
Test materials: Thermoplastic materials
Application: Determination of the structural viscous flow behavior and viscosity of thermoplastics, characterization of the material-specific behavior for the layout of plastics manufacturing processes.
| Technical data | |
| Measuring principle | Determination of rheological characteristics from a pressure gradient |
| Measurement options | Viscosity, pVT isobaric and isothermal, thermal conductivity |
| Speed range | 0.00004 to 40 mm/s |
| Temperature | Up to 500 °C (three-channel system, readout resolution 0.01 °C) |
| Test pressure transducers | 0 to 1000 and 0 to 2000 bar |
| Multi-barrel test chamber | Test barrels 2 x D=9,5 mm 2 x D=12 mm 2 x D=15 mm 3 x D=12 mm |
| Test piston acceleration | From 0 to 40 mm/s in 0.6 seconds |
| Additional features | Piston position measurement with high-resolution encoder, automatic pressure transducer detection |
| Standards | ISO 11443, DIN 54811, pvT 17744, ASTM D3835/D5099/D5930 (TC) |
